Source folder name is empty eclipse как исправить

In this post, We will learn How to Fix missing src/main/java & src/test/java folders in the Eclipse Maven web Project?

How to fixing src/main/java and src/test/java folders in Eclipse Maven Project – 2 build path entries are missing:

Sometimes, when you create a maven web application project, you will not see src/main/java and src/test/java as a source folder. When you try to create it manually you will get an error like “The folder is already a source folder”. In this tutorial, let’s see how to fix the missing src/main/java folder in the Eclipse Maven project

Step 1: Open the Eclipse and Go to File -> New -> Others.

Step 2: In the opened New wizard, scroll down and select Maven->Maven Project, click Next

3: In the below screen, If you do not want to create your maven project on the default Workspace location then Uncheck the “Use default Workspace location” checkbox option and with the help of the Browse button choose your workspace where you would want to create your Maven project. Click on Next.

4: Just scroll down and select option with Artifact Id as maven-archetype-webapp and Click on Next

5: Now You have to provide Group Id, Artifact Id & version. These attributes basically give your project deliverable(jar/war/ear etc.. ) a unique identity in the repository. Click Finish

Step 3: After you create a maven web application, you will see the Web project created like below. Now we can that the SampleWebApp Project doesn’t have src/main/java and src/test/java folders in it. It has only the src/main/resource folder.

Step 4: Even when We try to create a new Source folder We will an error like ” The Folder is already a source folder “.

Right-click on  your project then go to Source Folder and try to create src/main/java then it will show an error that is depicted in the below screen shots

Step 5: Fixing this issue is really very simple, Just Right Click on the project go to Properties. After that go to Build Path, You see an error like ” 2 build path entries are missing “

Step 6: This error usually comes when the JRE System Library is wrongly pointed. Now go to the Libraries tab and change the JRE System Library to the correct version by clicking on Edit.

Note: In case if you do not see the src/main/java and src/test/java directories in your project structure then you will have to go to Project ->Properties ->Java BuildPath ->Libraries after that select JRE System Library and click on Edit and Select or configure correct JRE System Library click on Finish and then click on Apply. You should see those( src/main/java and src/test/java) folders/directories now. You may also right-click on your project then maven -> Update Project->Ok to perform a maven-update on your project.

Note: You should keep in mind that in recent Eclipse versions you don’t need to use mvn eclise:eclipse anymore because this functionality is now built-in with the recent m2e eclipse plugin

Step 7: Once the JRE System Library is changed/updated the issue should be resolved, You may also do Maven Update Project (Right on the Project –> Maven –> Update Project). Now you must have the src/main/java and src/test/java folders in your project.

That’s Yet!!

That’s all about How to Fix missing src/main/java & src/test/java folders in the Eclipse Maven web Project?

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If you have any feedback or suggestion please feel free to drop in below comment box.

Development issue/problem:

I don’t have much experience with Maven in combination with Android, so I followed these instructions to create a new project for Android. After making a project I get the following error message:

When I try to add a new source directory via New->Other->Java source directory with src/test/java, I get another error message :

But I don’t have the src/test/java file in the project. How do you do that? What a great way to set up a project, because I think there’s something missing from these instructions. So, what time does Maven src/test/java appear?

I use Eclipse Juno, m2e 1.1.0, Android configuration for m2e 0.4.2.

How can I solve this problem?

Solution 1:

I understand this too, because the latest update of the m2e-android plugin (version 0.4.2) happens both when you create a new project and when you import an existing project (unless you use src/test/java).

It seems that m2e-android (or maybe m2e) is now always trying to add src/test/java as the source directory in the .classpath file, whether or not it exists in your project directory :

Because it has already been added to the project metadata file, Eclipse complains that the classpathentry is already there when you try to add the source directory via Eclipse:

There are several ways to solve this, the simplest is to manually create the src/test/java directory in the file system and then update the project by pressing F5 and running Maven -> Update Project (right click on the project, Maven -> Update Project…), this should fix the missing source directory: the ‘src/test/java’ error.

Solution 2:

We can change the java file from

1. Construction Path -> Source.
2. Click on the Add folder button.
3. Select the main unit as the container.
4. Click on the Create folder button.
5. Enter the folder name as java.
6. Click on Ready

I’m fine. I’m fine.

Solution 3:

First I solve the problem by creating a folder named src/test/resources, then I rename the folder to src/test/java, then I recreate the folder src/test/resources, it works.

Solution 4:

This may have been caused by the loss of the home directory.

Right click on the src folder -> Change source folder

Solution No 5:

I had the same problem, I solved it.
Create the missing folder directly in the file system (e.g. with Windows Explorer).
And then update your project under the Eclipse.

Solution No 6:

This is a bug in the Android connector for M2E (m2e-android) that has recently been repaired:

https://github.com/rgladwell/m2e-android/commit/2b49 00153cd34fff1cec47fe5aeffabe44d87

This fix has been merged and will be available at the next release. In the meantime, you can test the new patch by installing it from the nearest update site:

http://rgladwell.github.com/m2e-android/updates/master/

Solution No 7:

Remove the m2 plugin from the launch plugin list and launch Maven->Update projects on all projects that worked for me.

Note** You do not need to create additional folders to prevent merging when using SVN/Git-based branches.

Solution No 8:

In the case of the Maven project

Try right-clicking on the project and then select Maven -> Update Project….. (Refreshes the project) and then Ok.

Solution No 9:

Select the project -> New -> folder (not the source folder) -> select the project again -> enter the folder name as (src/test/java) -> finished. Here’s how.

If no test source is present, it will be linked automatically. If not, you’ll have to pair it up manually.

Good luck!

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